Dow Corning 795 Silicone Building Sealant - Black (Оne Расk)
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In general, Dow 795 will not allow water under its surface, but since cement and/or asphalt are porous, water will still get into the surface, whereas Dow 795 cannot. Instead, you can use a cement sealer to stop water from seeping into the surface, such as a cementuous Stone sealers allow water to pass through the top layer and are able to prevent leaks.
As a final note, 795 is definitely a structural sealant and the typical product used around butt joints, whether they are concrete or glass. *Use of the appropriate primer is important for specific applications.
I'm not sure what this question is about. you are talking about a gap over an inch between panels, the 795 would need a backer to cover that kind of spacing. There are several advantages to 795 over other RTV type silicones, such as its more adherent consistency after setting as well as its lower viscosity. A set time of four hours can be set for this device I have been on the job for six
The manufacturer has not provided any data concerning any type of automotive application. Dow 795 may be appropriate for the sort of use you hope to achieve, but we cannot assure the seal will make your headlights leak proof.
Selected User Reviews For Dow Corning 795 Silicone Building Sealant - Black (Оne Расk)
Uncured caulk from an outdated caulk gun There was an included phony expiration date sticker on the package and the original expiration date was rubbed out. Update
Using a propane heater, I heated the garage to 95 overnight and by morning, it was completely tack free. DC says that curing takes seven to fourteen days (not hours, or days) so 795 is a very different temperature from the 24 hour cure I was use to. The kind of silicone sealant you can buy at Home Depot.
It worked great as a glazing for the glass in the windows! The caulk is easy to dispense through a standard caulking gun, and mineral spirits are easy to clean. The glass was taped off around the edges, a thick bead was applied to the awlwood treated hatch, and then I pressed them into place. As far as coverage goes, I applied enough pressure to allow the 795 to ooze out on top and bottom a bit to give it a complete coat, let it dry, then trimmed with a razor, and it looks and seals really well. Unlike the previous tube, this one was much bigger, and so I purchased another to finish another part of the project. I had enough to set four 11"x7" panes of glass in it. Good stuff and I think it's better for this glazing application than some of the 3M products that are a bit more persistent.
Dow told us they had no idea why it didn't set and offered no solutions for the issue. After 30 days, it was still tacky and would not hold the window in place without assistance. We contacted Dow for assistance but they had no idea what to do. In order to rebed the window, we had to remove the still sticky Dow and apply silicone that sets.
The Dow 795 sealant I use for sealing acylic or polycarbonate windows, opening ports, and on hatches in my boats where there are no other fasteners has worked well for me before. As you can see, 3/8" polycarbonate sheet has been bedded into a wooden sliding hatch frame with rabbets. As Dow 795 is thick and goopy, it is always best to mask ALL areas that you do not wish to have the Dow 795 adhere to or wish to remove excess Dow 795 The caulking gun is an easy way to apply it. This product is easy to install, grabs quickly, and holds firmly. I have not had any leaks when installing boat windows or hatches with this product. It works equally well on wood, fiberglass, and plastic resin frames. The black and white versions worked equally well for me. Mineral spirits are a great way to clean up. According to my memory, I have used cheap rubbing alcohol in the past as well, though I suggest you test it out since I know that my memory often fades. Preparing the surface for painting is crucial, as is cleaning the surface.
Based on what I have seen and experienced over ten years of using it on my boats, I highly recommend this product.
Buying more than you need is not a good idea. When I tried to use it as caulk, I found that it was not washable. In my opinion, it is too soft a product. It adheres fine, but the pits and chunks come off when cleaned. Also, I made the mistake of buying a few tubes and tried to use some a couple of months after its As a result, it had totally lost its ability to cure, and I had no choice but to throw out the remaining tubes.
As soon as I applied it and let it cure, the product separated from my hatch lens and caused several leaks. It appears the product was not stored at the proper temperature. It was an unpleasant surprise to find out this information after the fact. The seller did not offer any assistance, including a return.
The delivery arrived quickly, as well as being well packaged and even within the time frame had been quoted (9 months left before the expiration date). I am very satisfied with the overall outcome.
You can call the company and they will refund your money.
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